NetBSD 2.0

netbsd/usr.bin/who/Makefile

@@ -0,0 +1,8 @@
+#	$NetBSD: Makefile,v 1.7 2002/08/01 23:23:07 christos Exp $
+#	@(#)Makefile	8.1 (Berkeley) 6/6/93
+
+PROG=	who
+SRCS=	who.c utmpentry.c
+CPPFLAGS+=	-DSUPPORT_UTMPX -DSUPPORT_UTMP
+
+.include <bsd.prog.mk>

netbsd/usr.bin/who/utmpentry.c

@@ -0,0 +1,278 @@
+/*	$NetBSD: utmpentry.c,v 1.4 2003/02/12 17:39:36 christos Exp $	*/
+
+/*-
+ * Copyright (c) 2002 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *        This product includes software developed by the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+#ifndef lint
+__RCSID("$NetBSD: utmpentry.c,v 1.4 2003/02/12 17:39:36 christos Exp $");
+#endif
+
+#include <sys/stat.h>
+
+#include <time.h>
+#include <string.h>
+#include <err.h>
+#include <stdlib.h>
+
+#ifdef SUPPORT_UTMP
+#include <utmp.h>
+#endif
+#ifdef SUPPORT_UTMPX
+#include <utmpx.h>
+#endif
+
+#include "utmpentry.h"
+
+
+#ifdef SUPPORT_UTMP
+static void getentry(struct utmpentry *, struct utmp *);
+static time_t utmptime = 0;
+#endif
+#ifdef SUPPORT_UTMPX
+static void getentryx(struct utmpentry *, struct utmpx *);
+static time_t utmpxtime = 0;
+#endif
+#if defined(SUPPORT_UTMPX) || defined(SUPPORT_UTMP)
+static int setup(const char *);
+static void adjust_size(struct utmpentry *e);
+#endif
+
+int maxname = 8, maxline = 8, maxhost = 16;
+static int numutmp = 0;
+static struct utmpentry *ehead;
+
+#if defined(SUPPORT_UTMPX) || defined(SUPPORT_UTMP)
+static void
+adjust_size(struct utmpentry *e)
+{
+	int max;
+
+	if ((max = strlen(e->name)) > maxname)
+		maxname = max;
+	if ((max = strlen(e->line)) > maxline)
+		maxline = max;
+	if ((max = strlen(e->host)) > maxhost)
+		maxhost = max;
+}
+
+static int
+setup(const char *fname)
+{
+	int what = 3;
+	struct stat st;
+
+	if (fname == NULL) {
+#ifdef SUPPORT_UTMPX
+		setutxent();
+#endif
+#ifdef SUPPORT_UTMP
+		setutent();
+#endif
+	} else {
+		size_t len = strlen(fname);
+		if (len == 0)
+			errx(1, "Filename cannot be 0 length.");
+		what = fname[len - 1] == 'x' ? 1 : 2;
+		if (what == 1) {
+#ifdef SUPPORT_UTMPX
+			if (utmpxname(fname) == 0)
+				err(1, "Cannot open `%s'", fname);
+#else
+			errx(1, "utmpx support not compiled in");
+#endif
+		} else {
+#ifdef SUPPORT_UTMP
+			if (utmpname(fname) == 0)
+				err(1, "Cannot open `%s'", fname);
+#else
+			errx(1, "utmp support not compiled in");
+#endif
+		}
+	}
+#ifdef SUPPORT_UTMPX
+	if (what & 1) {
+		(void)stat(fname ? fname : _PATH_UTMPX, &st);
+		if (st.st_mtime > utmpxtime)
+			utmpxtime = st.st_mtime;
+		else
+			what &= ~1;
+	}
+#endif
+#ifdef SUPPORT_UTMP
+	if (what & 2) {
+		(void)stat(fname ? fname : _PATH_UTMP, &st);
+		if (st.st_mtime > utmptime)
+			utmptime = st.st_mtime;
+		else
+			what &= ~2;
+	}
+#endif
+
+	return what;
+}
+#endif
+
+void
+freeutentries(struct utmpentry *ep)
+{
+#ifdef SUPPORT_UTMP
+	utmptime = 0;
+#endif
+#ifdef SUPPORT_UTMPX
+	utmpxtime = 0;
+#endif
+	if (ep == ehead) {
+		ehead = NULL;
+		numutmp = 0;
+	}
+	while (ep) {
+		struct utmpentry *sep = ep;
+		ep = ep->next;
+		free(sep);
+	}
+}
+
+int
+getutentries(const char *fname, struct utmpentry **epp)
+{
+#ifdef SUPPORT_UTMPX
+	struct utmpx *utx;
+#endif
+#ifdef SUPPORT_UTMP
+	struct utmp *ut;
+#endif
+#if defined(SUPPORT_UTMP) || defined(SUPPORT_UTMPX)
+	struct utmpentry *ep;
+	int what = setup(fname);
+	struct utmpentry **nextp = &ehead;
+	if (what == 0) {
+		*epp = ehead;
+		return numutmp;
+	} else {
+		ehead = NULL;
+		numutmp = 0;
+	}
+#endif
+
+#ifdef SUPPORT_UTMPX
+	while ((what & 1) && (utx = getutxent()) != NULL) {
+		if (fname == NULL && utx->ut_type != USER_PROCESS)
+			continue;
+		if ((ep = calloc(1, sizeof(struct utmpentry))) == NULL)
+			err(1, NULL);
+		getentryx(ep, utx);
+		*nextp = ep;
+		nextp = &(ep->next);
+	}
+#endif
+
+#ifdef SUPPORT_UTMP
+	while ((what & 2) && (ut = getutent()) != NULL) {
+		if (fname == NULL && (*ut->ut_name == '\0' ||
+		    *ut->ut_line == '\0'))
+			continue;
+		/* Don't process entries that we have utmpx for */
+		for (ep = ehead; ep != NULL; ep = ep->next) {
+			if (strncmp(ep->line, ut->ut_line,
+			    sizeof(ut->ut_line)) == 0)
+				break;
+		}
+		if (ep != NULL)
+			continue;
+		if ((ep = calloc(1, sizeof(struct utmpentry))) == NULL)
+			err(1, NULL);
+		getentry(ep, ut);
+		*nextp = ep;
+		nextp = &(ep->next);
+	}
+#endif
+	numutmp = 0;
+#if defined(SUPPORT_UTMP) && defined(SUPPORT_UTMPX)
+	if (ehead != NULL) {
+		struct utmpentry *from = ehead, *save;
+
+		ehead = NULL;
+		while (from != NULL) {
+			for (nextp = &ehead;
+			    (*nextp) && strcmp(from->line, (*nextp)->line) > 0;
+			    nextp = &(*nextp)->next)
+				continue;
+			save = from;
+			from = from->next;
+			save->next = *nextp;
+			*nextp = save;
+			numutmp++;
+		}
+	}
+	*epp = ehead;
+	return numutmp;
+#else
+	*epp = NULL;
+	return 0;
+#endif
+}
+
+#ifdef SUPPORT_UTMP
+static void
+getentry(struct utmpentry *e, struct utmp *up)
+{
+	(void)strncpy(e->name, up->ut_name, sizeof(up->ut_name));
+	e->name[sizeof(e->name) - 1] = '\0';
+	(void)strncpy(e->line, up->ut_line, sizeof(up->ut_line));
+	e->line[sizeof(e->line) - 1] = '\0';
+	(void)strncpy(e->host, up->ut_host, sizeof(up->ut_host));
+	e->name[sizeof(e->host) - 1] = '\0';
+	e->tv.tv_sec = up->ut_time;
+	e->tv.tv_usec = 0;
+	adjust_size(e);
+}
+#endif
+
+#ifdef SUPPORT_UTMPX
+static void
+getentryx(struct utmpentry *e, struct utmpx *up)
+{
+	(void)strncpy(e->name, up->ut_name, sizeof(up->ut_name));
+	e->name[sizeof(e->name) - 1] = '\0';
+	(void)strncpy(e->line, up->ut_line, sizeof(up->ut_line));
+	e->line[sizeof(e->line) - 1] = '\0';
+	(void)strncpy(e->host, up->ut_host, sizeof(up->ut_host));
+	e->name[sizeof(e->host) - 1] = '\0';
+	e->tv = up->ut_tv;
+	adjust_size(e);
+}
+#endif

netbsd/usr.bin/who/utmpentry.h

@@ -0,0 +1,50 @@
+/*	$NetBSD: utmpentry.h,v 1.2 2003/11/28 23:52:34 wiz Exp $	*/
+
+/*-
+ * Copyright (c) 2002 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Christos Zoulas.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *        This product includes software developed by the NetBSD
+ *        Foundation, Inc. and its contributors.
+ * 4. Neither the name of The NetBSD Foundation nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+struct utmpentry {
+	char name[65];
+	char line[65];
+	char host[257];
+	struct timeval tv;
+	struct utmpentry *next;
+};
+
+extern int maxname, maxline, maxhost;
+
+int getutentries(const char *, struct utmpentry **);
+void freeutentries(struct utmpentry *);